The invention discloses a sediment cleaning device. The device comprises a water tank which is provided with a water inlet and a water outlet, an ultrasonic oscillating device for oscillating water in the water tank, a filtering screening box provided with a filter screen, and a power system for driving the filtering screening box to act. With the adoption of the sediment cleaning device with the arrangement above, the problems that more water is consumed, benthos are easily damaged, time and force are consumed, and detection error is easily caused due to manual washing and filtering of analyzing people to sediment, can be avoided.